Hi tullis
I'm hopped up on morphine st the moment and typing on my back so ditto to what Kim said...
Just wanted to say welcome, but I'm so sorry you've got this too. Have a read round the site as there's loads of great info and advice around. Normally I'd write reams but I'm having s bad time right now so you're lucky to get a rare short post!
Whatever you do, don't use ice anywhere on your body now - its really bad on CRPS skin, causes more pain and spread. Just mentioning it as you said you've got swelling. Don't let any medic use a BP cuff or do a blood test or give injection in the limb that has it either. Some sites like rsdhope have great advice you can print off and give to your doc/nurse.
Try unperfumed Epsom salts - a few tbsp in a warm bath, or wrapped in a damp cloth and put on the burning areas. We need the magnesium and skin absorbs it well. It's not instant, but if you use it regularly it's good. You can get it in a cream too - not to use like a moisturiser but just to rub some in.
Am really flagging at mo, can't keep eyes open, sorry. Other folk will be along with more useful stuff soon. Hang on in there and keep posting. Try deep breathing exercises to help control pain and stress too, good natural pain reliever, meditation is also good - I use Mindfulness ones (YouTube).
Bram.